OK - So I fired up the auto to show off how cool it is for some friends....Turned on the air and the flash unit. Didn't realize the air preassure wasn't building up and didn't reset the position of the flash. Left the room-15 minutes later came back in to a cloud of failure-Lucky that Vastex has top coat rubber in stock and got some the next day- Just a matter of time until I do it again so I bought extra -

First thing is to get the old/ruined top coat off. Best to heat it up and pull with pliers. When it is cold it wil not budge. Next I sanded/cleaned all the old adhesive off. You have to use a high heat adhesive made just for this purpose.Vastex has both. Next I cut the new piece 1/2" bigger than needed. You apply glue with a roller to both pieces. You only get one shot at it so I put the top coat on the glass of the exposure unit "crap box" and brought the pallet down to meet it in a "hindge method". Stack some weight on it, say a prayer, and let it sit overnight. Trim it after dry. We have done a bunch of these and had pretty good luck. The trick is a clean smooth surface and even pressure. The only one I screwed up was due to dirt on the table. I was in a hurry and it left a divit in the material. Dar.....